CN109085279B - Liquid chromatography special-purpose fruit pulp sample cryopreserving device - Google Patents
Liquid chromatography special-purpose fruit pulp sample cryopreserving device Download PDFInfo
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- CN109085279B CN109085279B CN201811172329.0A CN201811172329A CN109085279B CN 109085279 B CN109085279 B CN 109085279B CN 201811172329 A CN201811172329 A CN 201811172329A CN 109085279 B CN109085279 B CN 109085279B
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- frame
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- 238000004811 liquid chromatography Methods 0.000 title claims abstract description 24
- 235000013399 edible fruits Nutrition 0.000 title claims abstract description 18
- 238000007710 freezing Methods 0.000 claims abstract description 96
- 230000008014 freezing Effects 0.000 claims abstract description 96
- 238000003860 storage Methods 0.000 claims abstract description 71
- 239000007788 liquid Substances 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 9
- 239000000853 adhesive Substances 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims description 5
- 238000005138 cryopreservation Methods 0.000 claims description 4
- 238000005267 amalgamation Methods 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 claims 1
- 238000005070 sampling Methods 0.000 abstract description 9
- 239000007787 solid Substances 0.000 abstract description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 2
- 239000001301 oxygen Substances 0.000 abstract description 2
- 229910052760 oxygen Inorganic materials 0.000 abstract description 2
- 239000000523 sample Substances 0.000 description 71
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 235000015110 jellies Nutrition 0.000 description 2
- 239000008274 jelly Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000012520 frozen sample Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/16—Injection
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N2030/022—Column chromatography characterised by the kind of separation mechanism
- G01N2030/027—Liquid chromatography
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a freezing storage device for a liquid chromatography special-purpose fruit pulp sample, which comprises a base and a freezing storage frame, wherein the freezing storage frame is provided with four fan-shaped columns which are spliced into a cylinder, the section of a central shaft is triangular, a top plate is fixed at the top of the central shaft, a pin shaft is fixed at the position of the top plate close to the central shaft, a plurality of layers of freezing storage plates are arranged and are fixedly stacked on the freezing storage frame through the pin shaft, the upper surface of each freezing storage plate is provided with a semi-water-drop-shaped sample storage hole, liquid is filled in each freezing storage plate, the base is provided with four sliding rails, and pulleys of each freezing storage frame are positioned in the sliding rails and can move along the sliding rails. According to the device for freezing and storing the fruit pulp sample special for the liquid chromatography, the sample storage and sampling are carried out in an ice bath environment, and the sample is ensured to be in a frozen solid state. When storing and sampling, the frozen storage rack slides to the outermost side of the base, the frozen storage plate is unscrewed to perform sample storing and sampling operation, and after the sample is stored, the frozen storage plate can be quickly screwed in, so that the sample is protected from light and isolated from oxygen. The sample storage hole is in a semi-water drop shape, and the solid sample can be taken out at one time with the aid of the drawing bar.
Description
Technical Field
The invention relates to a jelly sample freezing device special for liquid chromatography.
Background
When the liquid chromatography is used for analyzing the internal quality components of the fruits, the sample consumption is small, the requirements on storage safety and reliability are high, and whether the sample access mode is simple and perfect determines the efficiency of the experimental process and the reliability of the results. When components which are difficult to be oxidatively decomposed, such as soluble sugar, organic acid and the like, are analyzed, pulp is generally added into a centrifuge tube or a self-sealing bag for cold preservation, when the sample is used for experiments, the sample is uniformly mixed after thawing, a small spoon is used for sampling a little, the sample with specific weight is weighed, the process is operated after thawing the sample, the whole process is very time-consuming, meanwhile, the liquid chromatography sample injection amount is very small, the sample waste is very large, the pulp is extremely easy to adhere to the tube orifice or the tube wall of the centrifuge tube for loading the sample, and the complete extraction of the sample by an extracting agent is not facilitated, so that experimental errors are caused; when components which are easy to oxidize and decompose such as phenols and pigments are analyzed, the operation is required to be fast and light-proof, samples are cut into tiny particles firstly, the particles are filled into a centrifuge tube or a self-sealing bag, ice bath or quick freezing is needed in the process, otherwise, the samples are thawed under the protection of no extracting solution, degradation of certain components in the samples can be caused, liquid nitrogen grinding is carried out during sample application, sample weighing and extraction are carried out again, the powdery samples are easy to adhere to a tube orifice or a tube wall, two people are needed to cooperate in the whole sampling process, the time and labor are extremely consumed, and experimental errors are also easy to cause. In addition, in the two traditional fruit pulp storing and taking operation modes, the sample with required weight cannot be weighed at one time during weighing; usually, a certain sample is required to be found, and the finding is particularly troublesome; meanwhile, a large number of centrifuge tubes and self-sealing bags are required to be used, and the centrifuge tubes and the self-sealing bags can not be reused, so that a large amount of garbage is generated, and the environmental protection is not facilitated.
Disclosure of Invention
The invention aims to overcome the defects of the traditional operation, and provides a special fruit pulp sample freezing device for liquid chromatography, which can conveniently and rapidly store and sample the special fruit pulp for liquid chromatography.
The invention adopts the technical scheme that: the utility model provides a special fruit thick liquid sample of liquid chromatograph freezes deposits device, includes base and freezes deposits the frame, it is four to freeze to deposit the frame, every is fan-shaped cylinder, and the amalgamation is become the cylinder, and every freezes deposits the frame and includes axis, roof, round pin axle, freezes to deposit board and pulley, the axis cross-section is triangle-shaped, and four axis amalgamations become the cylinder, and the roof is fixed at the axis top, and the round pin axle is fixed in the roof and is close to the centraxonial position, it has the multilayer to freeze to deposit the board, is laminated to be fixed on freezes to deposit the frame through the round pin axle to accessible round pin axle relatively axis rotates, it is equipped with half water droplet form sample storage hole to freeze to deposit the board upper surface, freezes to deposit to be equipped with liquid in the board, be equipped with four slide rails on the base, freezes to deposit the pulley of frame and is located the slide rail for freezes to deposit the frame and can remove the base border along the slide rail. The arrangement between the freezing plates is tight, so that the upper freezing plate can be used as an upper cover of the lower freezing plate, and the samples in the sample storage holes are prevented from flowing out. The liquid in the freezing storage plate is preloaded and cannot be filled too fully, so that the freezing storage plate is prevented from cracking when the liquid freezes.
The invention also comprises a fixing device for fixing the freezing shelf on the base to prevent the freezing shelf from moving.
As the preferable technical scheme of the invention, the fixing device is a lifting ring, the surface of the top plate of the freezing and storing frame is provided with a dent, four supporting legs are arranged at the bottom of the lifting ring and are used for being inserted into the dents of the four freezing and storing frames, and the top of the lifting ring is provided with hooks.
According to the technical scheme, the fixing device is a clamp strip, one end of the clamp strip is fixed on the base and can rotate along the base, a snap fastener or a self-adhesive material is arranged at the other end of the clamp strip, and a corresponding snap fastener or a self-adhesive material is arranged on a freezing plate at a corresponding position of the clamp strip, and is used for fixing the clamp strip.
As a preferable technical scheme of the invention, soft heat-insulating materials such as foamed plastics are arranged at the bottom of the freezing plate, so that the freezing plate has a heat-insulating effect, and space can be provided for frozen liquid to prevent the freezing plate from cracking.
As the preferable technical scheme of the invention, the top plate is made of a light-resistant material, and the freezing plate is made of transparent hard plastic.
As a preferable technical scheme of the invention, the liquid in the freezing and storing plate is water, and accounts for 75-85% of the inner volume of the freezing and storing plate.
As the preferred technical scheme of the invention, the sample storage hole is in a semi-water drop shape, so that the sample can be conveniently taken out, and the design volume is generally in different specifications within the range of 0.5-1 mL.
As a preferable technical scheme of the invention, 6 sample storage holes on each layer of the freezing storage rack are used for storing experiment repeated samples, and the other 3 holes are used as standby samples for corresponding experiment repeated samples. As the preferable technical scheme of the invention, the invention further comprises a drawing bar, wherein one end of the drawing bar is fixed in the sample storage hole, and the other end of the drawing bar slightly extends out of the sample storage hole.
The invention relates to a frozen storage device for a liquid chromatography special fruit pulp sample, which is provided with frozen storage frames of 4 fan-shaped columns, wherein a plurality of frozen storage plates are arranged in each frozen storage frame, liquid is filled in each frozen storage plate, the frozen storage device for the liquid chromatography special fruit pulp sample is frozen in advance before storing samples, the liquid is frozen, the samples are stored and sampled in an ice bath environment, the trouble of additional auxiliary ice bath is omitted, the samples can be ensured to be protected from light and frozen in time during storing, and the samples can be ensured to be always in frozen solid form during sampling. The sample storage rack slides to the outermost side of the base during sample storage and sampling, the sample storage operation and the sampling operation can be performed by unscrewing the sample storage plate, and the sample can be quickly screwed in after the sample storage is finished, so that the sample storage rack is simple and convenient, timely light shielding and oxygen isolation of the sample are ensured, and sample oxidation and visible light decomposition are prevented. The sample storage hole is arranged to be semi-water drop-shaped, compared with the conventional semi-circular sample storage hole, the tail part is added, under the assistance of drawing, the solid semi-water drop-shaped sample can be perfectly and directly taken out at one time during sampling, the sample storage hole can be directly placed at the bottom of an extraction container such as a centrifugal tube, the required weight can be weighed once according to the specific specification volume of the sample storage hole, one spoon is not required to be slowly added, and the sample storage device is convenient, clean, accurate and time-saving. According to the labels attached to the outer sides of the freezing plates, the sample searching is extremely convenient; the device is convenient to clean and can be reused. The freezing frame can be spliced into a cylinder, the occupied area is small, and the movement and the storage are convenient. The device can guarantee that experimental sample storage sample safe and reliable, experimental data is accurate, and independent alone just can accomplish of experimental sample weighing process, and whole manual work more than 70% of saving, the practicality is extremely strong.
Drawings
Fig. 1 is a schematic structural diagram of a liquid chromatography-dedicated pulp sample cryopreservation device in a combined state.
Fig. 2 is a schematic structural view of one of the freezing frames of the liquid chromatography-dedicated pulp sample freezing device.
Fig. 3 is a schematic structural view of a frozen storage plate rotated out after one of the frozen storage frames of the frozen storage device for the liquid chromatography special-purpose fruit pulp sample slides out.
Fig. 4 is a schematic view of the structure of the freezing shelf with the freezing plate removed.
Fig. 5 is a schematic structural view of the cryopanel.
Fig. 6 is a section A-A of fig. 5.
Fig. 7 is a schematic structural diagram of a liquid chromatography-specific pulp sample cryopreservation apparatus of example 2, wherein the extraction ring is removed.
Fig. 8 is a schematic structural diagram of a device for freezing and storing a liquid chromatography-specific pulp sample in example 2, wherein the bail is clamped on the freezing and storing rack.
Fig. 9 is a schematic structural view of a device for freezing and storing a liquid chromatography-specific pulp sample in example 3, wherein the clip strip is put down and the freezing and storing rack is movable.
Fig. 10 is a schematic structural diagram of a device for freezing and storing a liquid chromatography-specific pulp sample in example 3, wherein the clip strip is closed and the freezing and storing rack is not movable.
Fig. 11 is a schematic structural view of the base.
The invention will be further illustrated with reference to specific examples.
Detailed Description
Example 1
As shown in fig. 1-6, the special fruit pulp sample freezing device for liquid chromatography comprises a base 1 and four freezing frames 2, wherein the freezing frames are spliced into a cylinder, the base 1 and the freezing frames after splicing are equal to or slightly larger than the freezing frames after splicing, each freezing frame comprises a center shaft 3, a top plate 4, a pin shaft 5, a freezing plate 6 and a pulley 7, the cross section of the center shaft is triangular, the four center shafts are spliced into a cylinder, the top plate is fixed at the top of the center shaft, the pin shaft is fixed at the position, close to the center shaft, of the top plate, the freezing plates are provided with multiple layers and are fixedly stacked on the freezing frames through the pin shafts and can rotate relative to the center shaft through the pin shafts, the upper surface of each freezing plate is provided with a semi-water drop-shaped sample storage hole 8, liquid 9 is filled in each freezing plate, foam plastics 10 are arranged at the bottom in each freezing plate, the four sliding rails 11 are arranged on the base, the pulleys of each freezing frame are positioned in the sliding rails, and each layer of the sliding rails can move to the bottom seat edge. The top plate is made of a light-shading material such as a metal plate or a plastic plate with an aluminum film pressed on the surface, and the freezing storage plate is made of transparent hard plastic. The arrangement between the freezing plates is tight, so that the upper freezing plate can be used as an upper cover of the lower freezing plate, and the samples in the sample storage holes are prevented from flowing out. The liquid in the freezing storage plate is water, which accounts for 75-85% of the volume in the freezing storage plate, so that the freezing storage plate is prevented from cracking after freezing. Still include drawing 12, drawing 12 one end is fixed in the deposit-sample hole 8, and the other end is unfixed, and the length is for stretching out the application of sample hole slightly, and the length should not be too long, prevents to freeze the drawing removal when depositing the board and rotating the freeze and deposit the frame, leads to the sample to spill.
Before sample adding, a special fruit pulp sample freezing device for liquid chromatography is placed in a freezer in advance, after water is frozen, the frozen fruit pulp sample freezing device is taken out, one freezing frame is slid to the edge position of a base, a freezing plate is screwed out, fruit pulp or other samples are added in a sample storage hole, then the freezing plate is screwed back to the original position, and a label is written; the sample Kong Jiaman in the multilayer freezing plate can be slid back to the original position in sequence, and then the next freezing frame is operated. And after the sample storage work is finished, placing the liquid chromatography special-purpose pulp sample cryopreservation device in a freezer for preservation. When the sample is required to be taken out for testing, the special fruit pulp sample freezing device for liquid chromatography is taken out from the freezer, the freezing frame slides to the edge position of the base, the freezing plate is screwed out, and the drawing bar is drawn, so that the frozen sample can be taken out.
Example 2
As shown in fig. 7-8, the device for freezing and storing the pulp sample special for the liquid chromatograph is basically identical to the structure of the embodiment 1, and is characterized by further comprising a fixing device, wherein the fixing device is a lifting ring 13, a dent 14 is arranged on the top plate surface of the freezing and storing frame, four supporting legs 15 are arranged at the bottom of the lifting ring and are used for being inserted into the dents of the four freezing and storing frames, and hooks 16 are arranged at the top of the lifting ring. When the freezing frame is pushed out, the lifting ring is taken down, and after the use is finished, the lifting ring is clamped on the freezing frame, so that the movement of the freezing frame can be prevented.
Example 3
The jelly sample freezing device special for the liquid chromatograph is basically identical to the structure of the embodiment 1, and is characterized by further comprising a fixing device, wherein the fixing device is a clamp strip 17, one end of the clamp strip is fixed on the base and can rotate along the base, the other end of the clamp strip is provided with a snap fastener or self-adhesive material 18, and a freezing plate of the freezing frame at the corresponding position of the clamp strip is provided with a corresponding snap fastener or self-adhesive material 19 for fixing the clamp strip. When the freezing frame is pushed out, the clamp bar is put down, and after the clamp bar is used, the clamp bar is closed and fixed on the freezing frame, so that the movement of the freezing frame can be prevented. The clamping strap can be a narrow strip, can be as wide as the outer side of the freezing storage rack, and can reach the bottom-most freezing storage plate or the top plate in height.
The lifting ring and the clamping strap can be arranged at the same time, so that the freezing shelf can be better fixed on the base.
The inner side and the outer side of each sliding rail are respectively provided with a baffle 20 for preventing the sliding wheels from sliding out of the range of the sliding rail.
Claims (5)
1. The utility model provides a special fruit thick liquid sample of liquid chromatograph freezes deposits device, includes base and freezes deposits the frame, freeze and deposit the frame and have four, amalgamate into the cylinder, every freezes deposits the frame and includes axis, roof, round pin axle, freezes to deposit board and pulley, the cross-section of axis is triangle-shaped, four axis amalgamations become the cylinder, the roof is fixed at the axis top, the round pin axle is fixed in the roof and is close to the position of axis, freezes to deposit the board and has the multilayer, is laminated to be fixed on freezes to deposit the frame through the round pin axle to can rotate through the relative axis of round pin axle, it is equipped with half water droplet form sample storage hole to freeze to deposit the board upper surface, it is equipped with liquid to freeze to deposit the board, be equipped with four slide rails on the base, freezes to deposit the pulley of frame and is located the slide rail for freezes to deposit the frame and can remove to the base border along the slide rail;
the freezing storage rack is fixed on the base and is prevented from moving by the fixing device;
The fixing device is a lifting ring, the surface of the top plate of the freezing storage rack is provided with a recess, four supporting legs are arranged at the bottom of the lifting ring and are used for being inserted into the recesses of the four freezing storage racks, and the top of the lifting ring is provided with a hook;
Or the fixing device is a clamp strip, one end of the clamp strip is fixed on the base and can rotate along the base, the other end of the clamp strip is provided with a snap fastener or a self-adhesive material, and the freezing storage rack is provided with a corresponding snap fastener or a self-adhesive material on a freezing storage plate at the corresponding position of the clamp strip and is used for fixing the clamp strip;
The sample storage device also comprises a drawing bar, wherein one end of the drawing bar is fixed in the sample storage hole, and the other end of the drawing bar slightly extends out of the sample storage hole.
2. The liquid chromatography specific pulp sample cryopreserving device according to claim 1, wherein: the inner bottom of the freezing storage plate is provided with a soft heat insulation material.
3. The liquid chromatography specific pulp sample cryopreserving device according to claim 2, wherein: the top plate is made of a light-shading material, and the freezing storage plate is made of transparent hard plastic.
4. A liquid chromatography specific pulp sample cryopreservation apparatus according to claim 3, wherein: the liquid in the freezing plate is water.
5. The liquid chromatography specific pulp sample cryopreserving device according to claim 1, wherein: the maximum diameter of each sample storage hole is smaller than the caliber of the later-stage extraction container, the volume of each sample storage hole is 0.5-1 mL, and the number of sample storage holes of each layer of freezing storage plate is 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811172329.0A CN109085279B (en) | 2018-10-09 | 2018-10-09 | Liquid chromatography special-purpose fruit pulp sample cryopreserving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811172329.0A CN109085279B (en) | 2018-10-09 | 2018-10-09 | Liquid chromatography special-purpose fruit pulp sample cryopreserving device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109085279A CN109085279A (en) | 2018-12-25 |
| CN109085279B true CN109085279B (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811172329.0A Active CN109085279B (en) | 2018-10-09 | 2018-10-09 | Liquid chromatography special-purpose fruit pulp sample cryopreserving device |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201876038U (en) * | 2010-11-30 | 2011-06-22 | 余姚市世锋模具厂 | Ice tray |
| JP2015089396A (en) * | 2013-11-05 | 2015-05-11 | 大陽日酸株式会社 | Freeze preservation device |
| CN204660236U (en) * | 2015-03-27 | 2015-09-23 | 天津奇特尔生物科技有限公司 | A kind of multilayer kit |
| CN206156175U (en) * | 2016-11-15 | 2017-05-10 | 成都叮当自动化设备有限公司 | Freezing memory system of biological sample |
| CN206735002U (en) * | 2017-05-16 | 2017-12-12 | 江苏省肿瘤医院 | Fan-shaped cylinder magnetic combination formula liquid nitrogen container freezes frame |
| CN206749387U (en) * | 2017-05-02 | 2017-12-15 | 张裕 | A kind of wheel of vehicle protective cover |
| CN207820940U (en) * | 2018-01-29 | 2018-09-07 | 遵义医学院 | A kind of liquid nitrogen container hand basket |
| CN208969056U (en) * | 2018-10-09 | 2019-06-11 | 江苏省农业科学院 | The dedicated pulp sample cryopreservation device of liquid chromatogram |
-
2018
- 2018-10-09 CN CN201811172329.0A patent/CN109085279B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201876038U (en) * | 2010-11-30 | 2011-06-22 | 余姚市世锋模具厂 | Ice tray |
| JP2015089396A (en) * | 2013-11-05 | 2015-05-11 | 大陽日酸株式会社 | Freeze preservation device |
| CN204660236U (en) * | 2015-03-27 | 2015-09-23 | 天津奇特尔生物科技有限公司 | A kind of multilayer kit |
| CN206156175U (en) * | 2016-11-15 | 2017-05-10 | 成都叮当自动化设备有限公司 | Freezing memory system of biological sample |
| CN206749387U (en) * | 2017-05-02 | 2017-12-15 | 张裕 | A kind of wheel of vehicle protective cover |
| CN206735002U (en) * | 2017-05-16 | 2017-12-12 | 江苏省肿瘤医院 | Fan-shaped cylinder magnetic combination formula liquid nitrogen container freezes frame |
| CN207820940U (en) * | 2018-01-29 | 2018-09-07 | 遵义医学院 | A kind of liquid nitrogen container hand basket |
| CN208969056U (en) * | 2018-10-09 | 2019-06-11 | 江苏省农业科学院 | The dedicated pulp sample cryopreservation device of liquid chromatogram |
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|---|---|
| CN109085279A (en) | 2018-12-25 |
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